[ssbmchamp]

Personally a song difficulty rating should be based on two things only:

1) Stamina
2) The hardest part in that song (a song is only as difficult as its most difficult part)

After all, these are the 2 main factors when trying to get a AAA on a song, so logically I
think you should rate the hardest part of this song (not parts) and then factor in a stamina rating to come up with a final difficulty rating.